CN1579898A - Grain depot humidity control method and its ventilating system - Google Patents
Grain depot humidity control method and its ventilating system Download PDFInfo
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- CN1579898A CN1579898A CN 03153388 CN03153388A CN1579898A CN 1579898 A CN1579898 A CN 1579898A CN 03153388 CN03153388 CN 03153388 CN 03153388 A CN03153388 A CN 03153388A CN 1579898 A CN1579898 A CN 1579898A
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Abstract
The invention discloses a temperature controlling method and airiness system of foodstuff storage shed, the method includes that testing the temperature of the storage shed, based on the result of comparing between the testing result and the setting result, wetting by controlling the area of wet film which is set in the air channel; the area of the wet film is changed by the humidity testing result; the system is composed by blower fan and air channel, the air distributor is connected with the air channel, it sends the cooling airflow into the storage, aerates and cool the foodstuff in the storage, there is wet film groupware in the airchannel, when the blower fan is working , the air flow is wetted through the wet film groupware, then enters the storage to regulate the wetness of the foodstuff. The invention ensure the moisture has been atomized totally before entering the storage, people can detect the changing of the humidity of air and cache on line, and regulate the area of the wet film momentarily to regulate the wetness of the air, it can not only avoid the cache losing moisture, but also is safe, its operating cost is low, reliability is good, and can be self-controlled well.
Description
Technical field
The present invention relates to a kind of storage humidity control method and utilize this method to realize the ventilation system of preserving moisture, lowering the temperature, especially a kind of employing wet film is realized the ventilation system of preserving moisture and lowering the temperature, and is specially adapted to the use in grain storage storehouse.
Background technology
Guaranteeing grain storage safety, and can prolong storage period, is the problem of the grain storage storehouse key that need solve.In storage, prevent that the respiration heat in the grain depot from raise cereal temperature, rational ventilation is the radical function of existing ventilation system.
Existing grain storage storehouse ventilation type commonly used mainly comprises the blast type and negative pressure discharge formula of malleation, and both also use the large granary that also has.Malleation is blast type to be by having the blower fan of certain blast and flow in the inlet setting of storage air flue, the outdoor low temperature air being sent in the storage; Because the fan pressure and the flow that are provided with are bigger, ventilation resistance is bigger, so the Uniform Ventilation susceptible to.Negative pressure discharge formula is the air-exhaust fan that some is set in the air flue outlet of storage, makes the inner generation of grain certain negative pressure by exhaust, thereby the outdoor low temperature air is inhaled in the storage, plays the effect of cooling.
The storage task that country stocks grain is all being born in China most of grain storage storehouse, and in order to ensure long-term, the safe storage of these grains, moisture is lower during the grain warehouse-in, generally than the low 1-2% of adequate moisture.In long-term ventilation process, the moisture of grain further loses, and is example with the paddy rice of warehouse-in moisture about 13%, and by the storage in 3 years, grain moisture content generally reduced about 1-2%.Grain moisture content reduces by 1%, just equals grain weight and has reduced 1%, and this not only has a strong impact on the economic benefit of grain distributors, and stocks grain distributors for country and country and bring very big economic loss; Because grain moisture content is low excessively, the biologically active of grain is affected simultaneously, and its edible quality and processing characteristics all descend to some extent, when serious even lose edibility.In addition, in the storage of other far productss, also there is the problem of product dehydration.
The volume in grain storage storehouse is bigger, and grain turns over the buttress difficulty, and the ventilation in the storage makes the serious dehydration of part grain.Adopt common air-humidification method, air humidity is difficult to control; If the atomizing of the water droplet that contains in the air or moisture not exclusively, then airborne moisture can excessively raise grain moisture condensation, moisture locating to accumulate with the initial contact surface of grain etc.Along with the prolongation of storage time, grain will be mouldy and putrid and deteriorated.So the humidification in grain storage storehouse needs prudent more and reliable.
There have been many facilities to be provided with super sonic humidification, spraying humidification device abroad.But, because the fogging degree of super sonic humidification and spraying humidification is subject to the influence of external condition and water quality, easily produce the dewfall phenomenon in the ventilation process.Also have a spot of facility also to be provided with the wet-film humidifying system, alleviated the water loss problem of the far products in the storage to a certain extent.
The aeration-cooling system of wet film has obtained application more and more widely at aspects such as greenhouse, building air-conditioners.But, in these were used, the main effect of wet film was cooling, requires not tight to air humidity.Therefore, both do not had the Humidity Detection system, do not added water wet film area control system yet.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of grain storage storehouse humidity control method is provided, the evaporation of wet film surface moisture during by ventilation, the airborne moisture of storage atomizes fully, effectively reduce ventilation temperature and cereal temperature, improve the grain storage condition, prevent grain because the water loss problem that ventilates and cause.
Another purpose of the present invention is at the deficiencies in the prior art, a kind of grain storage storehouse ventilation system is provided, by pre-buried hygroscopy sensor in air flue and grain, the variation of the moisture of online detection air and grain, at any time adjust the humidity of vent air by regulating the wet film area, reach and both reduce the grain dehydration, guarantee the target of grain storage safety again, system reliability is good, automatic guidance degree height.
A further object of the present invention is at the deficiencies in the prior art, a kind of grain storage storehouse ventilation system is provided, the vent window of newly-built grain depot is provided with fixed wet film ventilation system, or portable wet film ventilation system is set at the ventilation intake of existing reserve bank, so both reduced equipment cost, do not need again storage is transformed on a large scale, equipment is simple, operating cost is cheap.
The objective of the invention is to be achieved through the following technical solutions:
A kind of grain storage storehouse humidity control method, this method comprises the steps:
Step 1: the humidity in the grain storage storehouse is detected;
Step 2: detected humidity is compared with predefined humidity range value, measure numerical value and be lower than setting value, then opening water service is that the wet film that is arranged in the air flue supplies water, and carries out humidification; Measure numerical value and be higher than setting value, then open blower ventilation.
Step 3: in the system work process, regularly detect the humidity in storage and the air flue, when observed reading did not reach setting value, then system worked on; When observed reading reached setting value, then system stopped humidification.
In order further to control humidification, above-mentioned step 2 also further comprises:
Step 21: described wet film water supply area can be regulated, and its size changes with the size variation of humidity measurement value, and observed reading is high more, and wet film water supply area is more little, and observed reading is low more, and wet film water supply area is big more.
Adopt the grain storage storehouse ventilation system of above-mentioned control method controlled humidity, it is made of blower fan and air flue at least, the air outlet of blower fan links to each other with air flue, being used for that the cooling air communication is crossed air flue sends in the grain storage storehouse, grain to its inside storage carries out aeration-cooling processing, also further be provided with the wet film assembly in the air flue, the air-flow that forms in air flue during blower fan work carries out sending into the grain storage storehouse behind the humidification through this wet film assembly, is used to regulate the humidity of grain in the grain storage storehouse.
As the core of grain storage storehouse with ventilation system, the wet film assembly is made up of wet film device, water service, detecting device and control setup at least; Water service links to each other with the wet film device and for its water supply, detecting device is installed in respectively in grain storage storehouse and the air flue, the signal of control setup receiving detection device output, and be that the wet film device supplies water according to this signal control water service.
The wet film device is more than one wet film unit, each wet film unit all is provided with the wet film that covers on the air flue cross-sectional plane, the area of wet film does not wait each other in the DIFFERENT WET film unit, by being the different wet film unit water supply of area, the gross area of water supply wet film is regulated in combination, realizes the humidity control in grain storage storehouse.If the wet film area of each wet film unit all is identical, combination is regulated will compare difficulty, and for example: in practical adjustments, if use the homalographic wet film to regulate, reach 5% degree of regulation, then wet film will be divided into 20 unit; And the wet film of unequal-area then only needs 6 unit just can reach 3.5% degree of regulation effect.
The water service of wet film comprises the water supply pipe that links to each other with total water source by water pump, and this water supply pipe is arranged on the wet film top in each wet film unit and is its water supply, and the moisture that is not evaporated behind the process wet film passes back into total water source by pipeline.
The detecting device of this system is temperature, the humidity sensor that is separately positioned in air flue and the storage, and the output of sensor links to each other with the input of control setup.
Control setup comprises controller and water supply electromagnetic valve, the output signal input controller of detecting device, and the water supply electromagnetic valve of controller control setting between water pump and wet film unit water supply pipe regulated the output of each wet film unit; In addition, control setup can also be the level pressure reflux valve, and this level pressure reflux valve links to each other with the water source, supplies water by hydraulic pressure regulating control water source.
In order in time to remind operator's attention, also be provided with annunciator on the controller, the output of detecting device links to each other with the input of annunciator, when the detected temperature of detecting device, humidity exceed predetermined value, alarm equipment alarm; Simultaneously, controller control water service stops the wet film unit is supplied water, and system stops humidification.
In sum, the present invention has following advantage:
1, the wet film cooling system of preserving moisture that ventilates, the evaporation of wet film surface moisture when ventilating, the airborne moisture atomizing that can guarantee to enter the grain storage storehouse is fully.
2, by pre-buried hygroscopy sensor in air flue and grain, can online detection air and the variation of the moisture of grain, and adjust the humidity of vent air at any time by regulating the wet film area, and reach and both reduce the grain dehydration, guarantee the target of grain storage safety again.
3, by the wet film evaporation, can effectively reduce ventilation temperature and cereal temperature, improve the grain storage condition.
4, can be provided with at the vent window of newly-built grain depot fixing system, also can adopt portable wet film ventilation system at the ventilation intake of existing national food reserve bank, so both reduce equipment cost, do not need again storage is transformed on a large scale.
5, adopt the wet film cooling system of preserving moisture that ventilates, equipment is simple, operating cost is cheap, system reliability is good, automatic guidance degree height.
Description of drawings
Fig. 1 is for wet film of the present invention ventilates, preserves moisture, the structural representation of cooling system;
Fig. 2 is a wet film apparatus structure scheme drawing of the present invention;
Fig. 3 is a control process diagram of circuit of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments technical scheme of the present invention is described in detail.
As shown in Figure 1, for wet film of the present invention ventilates, preserves moisture, the structural representation of cooling system.As can be seen from Figure 1, this system mainly is made up of storage 1, wet film assembly 2 and ventilation assembly 3, storage 1 is provided with exhausr port 11 and air flue 12, wet film assembly 2 and ventilation assembly 3 are arranged in the air flue 12 in turn along the direction that enters storage 1, enter storage 1 by the air behind wet film assembly 2 moistening and lowering temperatures by ventilation assembly 3, carry out interchange of heat after exhausr port 11 is discharged.
Wet film assembly 2 also further is provided with and detects control mechanism 4, and after the temperature in these detection control mechanism 4 detection storages 1, the humidity, the humidification amount of control wet film assembly 2 is rationally regulated the warm and humid degree in the storage 1.
Ventilation assembly 3 adopts the blower fan 31 that is arranged in the air flue 12 usually, will be blown into storage 1 inside by the air that wet film assembly 2 humidifications, temperature adjustment were handled.
As shown in Figure 2, be the structural representation of wet film device of the present invention.As can be seen from Figure 2; wet film device 2 comprises an above wet film unit 21; each wet film unit 21 mainly comprises wet film 211 and water supply part; the water supply part is made up of water supply pipe 212 and coupled water supply line 216; the water supply part is arranged on the top of wet film 211; for wet film 211 supplies water; reflux by pipeline through the moisture that is not evaporated behind the wet film 211; compile with water supply pipe 212; normally below wet film 211, place the pallet 213 that is filled with water; its below also is provided with the support 214 that plays protection and supporting role; collect in the water in the pallet 213 that is filled with water; flow into water tank 215 by return line, converge, provide the water source for systemic circulation by water pump 217 with current in the water tank 215.Wet film 211 whole coverings are arranged on the cross-sectional plane of air flue 12, wet film 211 areas in the DIFFERENT WET film unit 21 do not wait, can open the wet film unit 21 that has different wet film 211 areas according to the different needs of humidification, the combination of the wet film 211 by different area, the wet film gross area that forms is different, reaches the humidity control effect; If wet film 211 areas in each wet film unit 21 are all identical, combination is regulated will compare difficulty, and for example: in practical adjustments, if use the homalographic wet film to regulate, reach 5% degree of regulation, then wet film will be divided into 20 unit; And the wet film of unequal-area then only needs 6 unit just can reach 3.5% degree of regulation effect.
Ventilation system is installed and used in the process reality, both can be connected to each other between the more than one wet film 211, can not connect mutually yet, even can be set to two-layer up and down, but, every layer of wet film 211 is fixing by upper and lower fixing plate, and each wet film unit all is provided with independently recycling device such as upper and lower fixing plate and counter flow pipe.The gross area of wet film is removed parts such as the base that can't ventilate and water supply pipe, should be with the whole shutoff of the cross-sectional plane of air flue, that is should guarantee that all air that pass through air flue all pass through wet film, and the wet film that is passed through may all supply water and is used for humidification, also may be that part supplies water.
As shown in Figure 1, detect control mechanism 4 and comprise detecting device 41 and control setup 42, detecting device 41 is arranged in air flue 12 and the storage 1, control setup 42 links to each other with wet film assembly 2, control its humidification degree, the output of detecting device 41 links to each other with the input of control setup 42, realizes the control to wet film assembly 2.
Detecting device 41 is arranged on temperature, the humidity sensor 411,412 in air flue 12 and the storage 1 and is arranged on water tank 215 in-to-in water gauges 413 for comprising respectively.
Control setup 42 comprises that above control cock being arranged in the wet film assembly 2 links to each other with mouth with detecting device 41, according to the detection signal that receives, exports and control cock is implemented the control piece 421 of corresponding control.
Control cock comprises water compensating valve 422 and water supply electromagnetic valve 424, water compensating valve 422 is connected with water tank 215, regulates the water supply of control water tank 215 by the water yield, water supply electromagnetic valve 424 is arranged between the water supply pipe 212 of water pump 217 and wet film 211, is used to control to adjust the output of each wet film unit 21.
Control cock also further comprises level pressure reflux valve 423, and level pressure reflux valve 423 links to each other with water tank 215, by the water supply of hydraulic pressure regulating control water tank 215.When hydraulic pressure reaches the certain pressure value, opening level pressure reflux valve 423 water is directly refluxed, prevent the ducted after a little while hypertonia of unlatching quantity of wet film water supply unit, is not very high if regulate requirement, the wet film element number is less, and level pressure reflux valve 423 can not be provided with yet.Simultaneously, can also finish adjusting by water compensating valve 422 and water supply electromagnetic valve 424 herein, water gauge 413 in the water tank 215 links to each other with water compensating valve 422, when the pre-provisioning request of water yield out of reach in the water tank 215, water gauge 413 is done corresponding indication and is driven water compensating valve 422 moisturizings by mechanical movement its liquid level.
For the running state of monitored control system at any time, on control piece 421, also be provided with annunciator 43.The setting range of annunciator 43 is according to the different requirements of article that different storage is preserved, be adjusted to suitable scope, if air humidity, grain moisture and pressure of supply water have exceeded setting range, then annunciator 43 will auto alarm, control setup is controlled this system and is stopped humidification and cooling, detect numerical value up to it and reduce once more, during the pre-provisioning request of out of reach, the work of restarting this system.Its preset range can be regarded as safe range.
When needs ventilated, system can start water supply part and blower fan 31 automatically according to the signal of predefined program or grain moisture content detector.Under the effect of blower fan 31, the air of high temperature, low humidity is lowered the temperature and humidification by wet film 211.And, can determine the humidification ratio of air by regulating the water supply area of wet film 211.The adjustment of wet film area realizes by water supply electromagnetic valve 424 control wet film unit 21.As shown in Figure 2, wet film unit 21 is that whole wet film 211 is divided into straight-though from top to bottom a plurality of unit that area does not wait, and all there are independently water supply pipe 212 and water supply electromagnetic valve 424 in each unit, supplies water by water pump 217 usually.By to moistening and lowering temperature air and the not mixing of humidifying air, regulate the scope of the humidity of air to setting.The humidity control precision is the highest can be reached in 1%.
When detecting device 41 detects the temperature and humidity of the inner storage of storage article and need preserve moisture when aeration-cooling, total system brings into operation.When blower fan 31 started, water pump 217 started, and the water supply part begins to supply water to wet film 211.Water supply electromagnetic valve 424 in each wet film unit 21 can be according to the water route of the arbitrary wet film of the instruction automatic switch unit 21 of control piece 421.Pressure of supply water keeps stable by level pressure reflux valve 423.Through behind the wet film 211, the water that is not evaporated flows into pallet 213 backs that are filled with water and is back to water tank 215 by return line, with using water wisely.Water tank 215 is provided with water compensating valve 422 and water gauge 423 to guarantee water source supply.Blasted in the storage 1 by blower fan 31 by the air behind the wet film 211 evaporation moistening and lowering temperatures.Storage article in cold air and the storage are discharged by exhausr port 11 after carrying out the wet exchange of heat fully.Be delivered to control piece after sensor 411,412 in air flue 12 and the storage 1 detects the humiture data, calculate, if humidity is too high, then reduce the unlatching quantity of the wet film unit 21 of wet film 211, otherwise then increase by predefined program.When not needing humidification, can close humidification system and only ventilate.If its moisture has surpassed safe range, system's auto-stop then, annunciator 43 gives the alarm.
The design of ventilation assembly 3 must guarantee to prevent the harmful effect that the air humidity inequality may cause grain storage by the air of water supply wet film and good by the air-blending of the wet film that do not supply water.
As shown in Figure 3, be control process diagram of circuit of the present invention.As can be seen from Figure 3; the working process of ventilation system of the present invention is such: when ventilation system is started working; system's general supply is opened; detecting device is started working; detect the humidity in the grain storage storehouse, if humidity is normal or low excessively, control setup calculates the wet film area that needs water supply; regulating electromagnetic valve is that wet film supplies water, and opens water pump and blower fan simultaneously.If the humidity in the grain storage storehouse is too high, open blower fan equally, accelerate the airiness in the storage.
In the entire work process of system, regularly detect temperature, humidity conditions in storage and the air flue.If humidity is near the upper and lower limit of setting, then forced system stops humidification; If humidity is in the scope of setting, system continues operation; If humidity meets or exceeds setting value, alarm equipment alarm, system is out of service.
Need to prove at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1, a kind of grain storage storehouse humidity control method is characterized in that: comprise the steps:
Step 1: the humidity in the grain storage storehouse is detected;
Step 2: detected humidity is compared with predefined humidity range value, measure numerical value and be lower than setting value, then opening water service is that the wet film that is arranged in the air flue supplies water, and carries out humidification; Measure numerical value and be higher than setting value, then open blower ventilation;
Step 3: in the system work process, regularly detect the humidity in storage and the air flue, when observed reading did not reach setting value, then system worked on; When observed reading reached setting value, then system stopped humidification.
2, grain storage according to claim 1 storehouse humidity control method, it is characterized in that: described step 2 further comprises:
Step 21: described wet film water supply area is regulated according to the size of humidity measurement value, and observed reading increases, and reduces wet film water supply area, and observed reading reduces, and increases wet film water supply area.
3, a kind of grain storage storehouse ventilation system that adopts above-mentioned humidity control method controlled humidity, it is made of blower fan and air flue at least, the air outlet of blower fan links to each other with air flue, being used for that the cooling air communication is crossed air flue sends in the grain storage storehouse, grain to its inside storage carries out aeration-cooling processing, it is characterized in that: also further be provided with the wet film assembly in the described air flue, the air-flow that forms in air flue during blower fan work carries out sending into the grain storage storehouse behind the humidification through this wet film assembly, is used to regulate the humidity of grain in the grain storage storehouse.
4, grain storage according to claim 3 storehouse ventilation system, it is characterized in that: described wet film assembly is made up of wet film device, water service, detecting device and control setup; Water service links to each other with the wet film device and for its water supply, detecting device is installed in respectively in grain storage storehouse and the air flue, the signal of control setup receiving detection device output, and be controlled to be the output of wet film device according to this signal control water service.
5, grain storage according to claim 4 storehouse ventilation system, it is characterized in that: described wet film device is more than one wet film unit, each wet film unit all is provided with the wet film that covers on the air flue cross-sectional plane, the area of wet film does not wait each other in the DIFFERENT WET film unit, by being the different wet film unit water supply of area, the gross area of water supply wet film is regulated in combination, realizes the humidity control in grain storage storehouse.
6, according to claim 4 or 5 described grain storage storehouse ventilation systems, it is characterized in that: described water service is made up of with the water supply pipe that links to each other with water pump the water pump that links to each other with total water source, this water supply pipe is arranged on the wet film top in each wet film unit and is its water supply, and the moisture that is not evaporated behind the process wet film passes back into total water source by pipeline.
7, grain storage according to claim 4 storehouse ventilation system is characterized in that: described detecting device is the humidity sensor that is separately positioned in air flue and the storage, and the output of sensor links to each other with the input of control setup.
8, according to claim 4 or 7 described grain storage storehouse ventilation systems, it is characterized in that: described control setup comprises controller and water supply electromagnetic valve, the output signal input controller of detecting device, the water supply electromagnetic valve of controller control setting between water pump and wet film unit water supply pipe regulated the output of each wet film unit.
9, grain storage according to claim 4 storehouse ventilation system, it is characterized in that: described control setup also further comprises the level pressure reflux valve, the level pressure reflux valve links to each other with the water tank at water source, controls water supply by the hydraulic pressure of regulating tank.
10, grain storage according to claim 8 storehouse ventilation system, it is characterized in that: also be provided with annunciator on the described controller, the output of detecting device links to each other with the input of annunciator, the output of annunciator links to each other with controller, when the detected temperature of detecting device, humidity exceed predetermined value, alarm equipment alarm; Simultaneously, controller control water service stops the wet film unit is supplied water, and system stops humidification.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03153388 CN1262453C (en) | 2003-08-12 | 2003-08-12 | Grain depot humidity control method and its ventilating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03153388 CN1262453C (en) | 2003-08-12 | 2003-08-12 | Grain depot humidity control method and its ventilating system |
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| CN1579898A true CN1579898A (en) | 2005-02-16 |
| CN1262453C CN1262453C (en) | 2006-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 03153388 Expired - Fee Related CN1262453C (en) | 2003-08-12 | 2003-08-12 | Grain depot humidity control method and its ventilating system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374741A (en) * | 2011-09-30 | 2012-03-14 | 青岛海尔电冰箱有限公司 | Fresh-keeping device and refrigerating plant |
| CN102445951A (en) * | 2011-12-21 | 2012-05-09 | 成都众询科技有限公司 | Intelligent temperature and humidity control system |
| CN102741618A (en) * | 2009-12-23 | 2012-10-17 | 热之王公司 | Apparatus for controlling relative humidity in a container |
| CN107169699A (en) * | 2017-04-25 | 2017-09-15 | 无为皖江粮食机械有限公司 | A kind of food administration method and system based on verification of weight |
| CN112097323A (en) * | 2019-06-18 | 2020-12-18 | 广东美的制冷设备有限公司 | Air conditioner, humidification control method and device of air conditioner and storage medium |
| CN114167920A (en) * | 2021-11-09 | 2022-03-11 | 华迪计算机集团有限公司 | Digital intelligent moisture-preserving grain depot and numerical control method thereof |
| CN114396716A (en) * | 2022-01-26 | 2022-04-26 | 广汽本田汽车有限公司 | Control method, device and equipment of air conditioning system of operation field and storage medium |
-
2003
- 2003-08-12 CN CN 03153388 patent/CN1262453C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102741618A (en) * | 2009-12-23 | 2012-10-17 | 热之王公司 | Apparatus for controlling relative humidity in a container |
| CN102741618B (en) * | 2009-12-23 | 2015-09-16 | 热之王公司 | For controlling the equipment of the relative humidity in container |
| US9557084B2 (en) | 2009-12-23 | 2017-01-31 | Thermo King Corporation | Apparatus for controlling relative humidity in a container |
| CN102374741A (en) * | 2011-09-30 | 2012-03-14 | 青岛海尔电冰箱有限公司 | Fresh-keeping device and refrigerating plant |
| CN102445951A (en) * | 2011-12-21 | 2012-05-09 | 成都众询科技有限公司 | Intelligent temperature and humidity control system |
| CN107169699A (en) * | 2017-04-25 | 2017-09-15 | 无为皖江粮食机械有限公司 | A kind of food administration method and system based on verification of weight |
| CN107169699B (en) * | 2017-04-25 | 2020-12-25 | 无为皖江粮食机械有限公司 | Grain management method and system based on weight verification |
| CN112097323A (en) * | 2019-06-18 | 2020-12-18 | 广东美的制冷设备有限公司 | Air conditioner, humidification control method and device of air conditioner and storage medium |
| CN112097323B (en) * | 2019-06-18 | 2023-01-24 | 广东美的制冷设备有限公司 | Air conditioner, humidification control method and device of air conditioner and storage medium |
| CN114167920A (en) * | 2021-11-09 | 2022-03-11 | 华迪计算机集团有限公司 | Digital intelligent moisture-preserving grain depot and numerical control method thereof |
| CN114396716A (en) * | 2022-01-26 | 2022-04-26 | 广汽本田汽车有限公司 | Control method, device and equipment of air conditioning system of operation field and storage medium |
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| Publication number | Publication date |
|---|---|
| CN1262453C (en) | 2006-07-05 |
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